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December 21st, 2025 :: 3:59 am CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated December 21st at 2:54 am 
Temperature:30°F Dew Point:18°F
Barometer:30.3 inHg Wind:N 19 Mph
Humidity:58.6% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Dec 21st
Monday
Dec 22nd
Tuesday
Dec 23rd
Wednesday
Dec 24th
Thursday
Dec 25th
Cloudy Cloudy Cloudy Cloudy Cloudy
38°F
45°F
30°F
57°F
43°F
63°F
43°F
67°F
58°F
 
 Decatur Detailed Weather Forecast  
 
Sunday, December 21st, 2025
Morning Temperature: 33°F
A mix of cloud and sun.
Afternoon Temperature: 31°F
A mix of cloud and sun.
Evening Temperature: 30°F
Cloudy.
Monday, December 22nd, 2025
Overnight Temperature: 31°F
Cloudy.
Morning Temperature: 40°F
Cloudy. Windy at times.
Afternoon Temperature: 44°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 41°F
Clear with cloudy periods. Windy at times.
Tuesday, December 23rd, 2025
Overnight Temperature: 43°F
Cloudy.
Morning Temperature: 52°F
A mix of cloud and sun.
Afternoon Temperature: 49°F
A mix of cloud and sun.
Evening Temperature: 45°F
A mix of cloudy and clear skies.
Wednesday, December 24th, 2025
Overnight Temperature: 44°F
Cloudy.
Morning Temperature: 56°F
Cloudy. Windy at times.
Afternoon Temperature: 61°F
A mix of sun and cloud. Windy at times.
Evening Temperature: 62°F
Cloudy with a chance of showers. Windy at times.
Thursday, December 25th, 2025
Overnight Temperature: 59°F
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 63°F
Cloudy. Windy at times.
Afternoon Temperature: 64°F
Cloudy. Windy.
Evening Temperature: 65°F
Cloudy with a chance of showers. Windy.
Friday, December 26th, 2025
Overnight Temperature: 51°F
Cloudy with a slight chance of showers. Windy.
Morning Temperature: 43°F
Cloudy. Windy at times.
Afternoon Temperature: 36°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 32°F
A mix of cloudy and clear skies. Windy at times.
Saturday, December 27th, 2025
Overnight Temperature: 31°F
A mix of cloudy and clear skies.
Morning Temperature: 40°F
Cloudy. Windy at times.
Afternoon Temperature: 42°F
Cloudy.
Evening Temperature: 43°F
A mix of cloudy and clear skies.
Sunday, December 28th, 2025
Overnight Temperature: 40°F
A mix of cloudy and clear skies.
Morning Temperature: 46°F
Cloudy.
Afternoon Temperature: 43°F
Cloudy.
Evening Temperature: 40°F
Cloudy.
Monday, December 29th, 2025
Overnight Temperature: 37°F
Cloudy.
Morning Temperature: 41°F
Cloudy with showers likely. Windy at times.
Afternoon Temperature: 45°F
Cloudy with a chance of showers. Windy at times.
Evening Temperature: 53°F
Cloudy with showers likely. Windy.





 

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2:55 AM  30°F
 
 
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2:53 AM  25°F
 
 
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2:55 AM  28°F
 
 
Urbana, IL 
2:53 AM  25°F
 

 
This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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